wordpress - Calling web services method with php , returns unrecognizable characters

I call a web service with php , and display the results into post in wordpress , but response returns with unrecognizable characters.I use XYZ PHP Code plugin for this.

Below the code

//API Url
$url = 'http://myUrl/s1services';
$ch = curl_init($url);

//The JSON data.
$jsonData = array(
 'service' => 'login',    
 'username' => 'username',
 'password' => 'password',
 'appid' =>  '256'
);

//Encode the array into JSON.
$jsonData = json_encode($jsonData);

//Tell cURL that we want to send a POST request.
curl_setopt($ch, CURLOPT_POST, 1);

//Attach our encoded JSON string to the POST fields.
curl_setopt($ch, CURLOPT_POSTFIELDS, $jsonData);

//Set the content type to application/json
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json')); 

//Execute the request
$result = curl_exec($ch);
Copy code

the result below

пїЅMQпїЅNпїЅ@пїЅпїЅЙ¬пїЅtJпїЅЧ®vпїЅпїЅпїЅ>BпїЅпїЅпїЅпїЅпїЅxпїЅпїЅпїЅпїЅq,пїЅпїЅCпїЅA$пїЅпїЅkoyпїЅпїЅ.О№пїЅпїЅпїЅGпїЅz=пїЅ"пїЅCпїЅp\ \oпїЅпїЅпїЅпїЅ8пїЅпїЅпїЅLпїЅZd|6wEпїЅпїЅnGPпїЅBЗ¶-ЖњTпїЅ*пїЅпїЅp?2)Й›пїЅпїЅfпїЅпїЅgr1пїЅДѕOyпїЅпїЅ[аІЋ'пїЅ87pkпїЅпїЅпїЅпїЅP В»q9пїЅРЅпїЅ?пїЅ,пїЅcпїЅЩ¦пїЅZUпїЅrIпїЅпїЅЕ‰пїЅTSпїЅУіпїЅbпїЅ}] tzh:пїЅUIпїЅпїЅпїЅПЃ9[пїЅпїЅпїЅDпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅPпїЅ$пїЅпїЅпїЅ~~_пїЅпїЅЯђ(пїЅyпїЅH<пїЅпїЅ>пїЅ?пїЅzпїЅпїЅпїЅlпїЅпїЅпїЅ9RuHпїЅ]пїЅtпїЅпїЅyпїЅRSпїЅCпїЅпїЅnпїЅпїЅWPquпїЅ\2пїЅГЄпїЅzпїЅпїЅпїЅxпїЅWy BxMHRпїЅпїЅRпїЅпїЅпїЅпїЅпїЅпїЅ@KпїЅ$IJпїЅпїЅпїЅ^пїЅпїЅsпїЅZ;пїЅпїЅпїЅoпїЅпїЅjпїЅ~пїЅпїЅпїЅпїЅпїЅпїЅЙ пїЅпїЅ

Where can the error be found?

Thanks for any help

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